// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.
//
// Must not be included from any .h files to avoid polluting the namespace
// with macros.

#ifndef STORAGE_LEVELDB_UTIL_LOGGING_H_
#define STORAGE_LEVELDB_UTIL_LOGGING_H_

#include <cstdint>
#include <cstdio>
#include <string>

#include "port/port.h"

namespace leveldb
{

    class Slice;
    class WritableFile;

    // Append a human-readable printout of "num" to *str
    void AppendNumberTo(std::string *str, uint64_t num);

    // Append a human-readable printout of "value" to *str.
    // Escapes any non-printable characters found in "value".
    void AppendEscapedStringTo(std::string *str, const Slice &value);

    // Return a human-readable printout of "num"
    std::string NumberToString(uint64_t num);

    // Return a human-readable version of "value".
    // Escapes any non-printable characters found in "value".
    std::string EscapeString(const Slice &value);

    // Parse a human-readable number from "*in" into *value.  On success,
    // advances "*in" past the consumed number and sets "*val" to the
    // numeric value.  Otherwise, returns false and leaves *in in an
    // unspecified state.
    bool ConsumeDecimalNumber(Slice *in, uint64_t *val);

} // namespace leveldb

#endif // STORAGE_LEVELDB_UTIL_LOGGING_H_
